U.S. patent application number 15/977926 was filed with the patent office on 2018-09-13 for apparatus and method for collecting reusable material and cleaning surgical instruments.
The applicant listed for this patent is Mighty Oak Medical, Inc.. Invention is credited to George Frey, Geoff Lai, Benjamin Majors, Charles O'Neil, Russ Rydin.
Application Number | 20180256284 15/977926 |
Document ID | / |
Family ID | 50929217 |
Filed Date | 2018-09-13 |
United States Patent
Application |
20180256284 |
Kind Code |
A1 |
Frey; George ; et
al. |
September 13, 2018 |
APPARATUS AND METHOD FOR COLLECTING REUSABLE MATERIAL AND CLEANING
SURGICAL INSTRUMENTS
Abstract
A system and method for cleaning instruments, which provides
removal and collection of material from one or more surgical
instruments. The cleaning apparatus may be a dry cleaning process
or offered in conjunction with one or more fluids. In one
embodiment, the cleaning apparatus continuously purges blood, bone
and other debris quickly and may comprise a system for removing
reusable material from the cleaning process for reuse.
Inventors: |
Frey; George; (Englewood,
CO) ; Majors; Benjamin; (Englewood, CO) ;
O'Neil; Charles; (Edina, MN) ; Lai; Geoff;
(Lakewood, CO) ; Rydin; Russ; (Lakewood,
CO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Mighty Oak Medical, Inc. |
Englewood |
CO |
US |
|
|
Family ID: |
50929217 |
Appl. No.: |
15/977926 |
Filed: |
May 11, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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14974241 |
Dec 18, 2015 |
9968407 |
|
|
15977926 |
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|
14133146 |
Dec 18, 2013 |
9216063 |
|
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14974241 |
|
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|
61738939 |
Dec 18, 2012 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 90/70 20160201;
A61B 10/025 20130101; A61B 2017/00969 20130101 |
International
Class: |
A61B 90/70 20160101
A61B090/70; B08B 3/14 20060101 B08B003/14; B08B 3/10 20060101
B08B003/10; A61B 10/02 20060101 A61B010/02; B08B 1/00 20060101
B08B001/00 |
Claims
1. A device for treating a medical instrument or tool, comprising:
a housing including an entry valve in communication with an
internal chamber of the housing; a cartridge received within the
housing, a portion of an exterior surface of the cartridge moveably
interconnected to a portion of an interior surface of the housing,
wherein the cartridge is configured to move within the housing
between a first position and a second position, and wherein the
cartridge is configured to rotate relative to the housing; a
plurality of brushes received within the cartridge; one or more of
the plurality of brushes configured to move relative to the
cartridge; and a biasing member coupled to the cartridge and
contained within the housing, wherein the biasing member biases the
cartridge to the first position.
2. The device of claim 1, wherein the housing is configured to
receive and at least temporarily store at least one fluid.
3. The device of claim 2, further comprising at least one exit port
for draining fluid from the housing.
4. The device of claim 1, further comprising an obstruction
associated with the cartridge, wherein when a distal end of the
medical instrument or tool inserted into the device presses against
the obstruction, the cartridge moves from the first position to a
second position, and wherein the cartridge rotates relative to the
housing in response to movement of the cartridge between the first
and second positions.
5. The device of claim 1, further comprising a filter received
adjacent to the cartridge and in communication with a collection
container, wherein the filter separates reusable material from
unusable material.
6. The device of claim 1, wherein the entry valve is adapted to
receive at least one of an instrument, a tool, and an implant, and
wherein rotation of the cartridge causes the brushes to move
relative to the instrument, tool, or implant.
7. The device of claim 1, wherein the entry valve further comprises
a cover that comprises at least one aperture for inserting an
instrument, tool, implant, or other device into the housing.
8. The device of claim 1, further comprising a motor and a coupling
for mechanically linking a shaft of the motor to the cartridge,
wherein the cartridge rotates relative to the housing in response
to a force received from the motor.
9. The device of claim 8, wherein the coupling for mechanically
linking the shaft of the motor further couples to at least one of
the plurality of brushes for moving at least one of the plurality
of brushes.
10. The device of claim 8, wherein the motor is activated by a
sensor once an instrument is inserted into the device in proximity
to the sensor.
11. The device of claim 8, further comprising at least one
electrical actuator for activation of the motor.
12. The device of claim 1, further comprising an actuator and
coupling for providing rotation to the cartridge by pneumatic
means, wherein the cartridge rotates relative to the housing in
response to a force received from the coupling.
13. A device for cleaning a medical instrument or tool, comprising:
a housing comprising an internal cavity; a cleaning cartridge
selectively received within the internal cavity; at least one brush
adapted to be received within the cleaning cartridge; a biasing
member, wherein the biasing member biases the cleaning cartridge
towards a first position within the internal cavity of the housing;
internal cavity of the housing through application of pressure
applied to the cleaning cartridge in a first direction; wherein the
biasing member biases the cleaning cartridge in a second direction,
opposite to the first direction, to return the cleaning cartridge
to the first position once the application of pressure is removed;
and wherein at least one of the movement of the cleaning cartridge
from the first position to the second position or the movement of
the cleaning cartridge from the second position to the first
position causes the cleaning cartridge to rotate relative to the
housing.
14. The device of claim 13, further comprising at least one
collection container attached to the housing.
15. The device of claim 13, further comprising an entry valve
comprising an opening in communication with the hollow void of the
housing.
16. The device of claim 13, further comprising at least one fluid
injection port for injecting fluid from a fluid container into the
cleaning cartridge.
17. The device of claim 13, wherein the at least one brush is
arranged within the cleaning cartridge to permit placement of at
least one instrument, tool or implant within the cleaning cartridge
and in contact with the at least one brush.
18. The device of claim 17, wherein the cleaning cartridge further
comprises a bottom surface having a screen or filter for collecting
materials removed from the at least one instrument, tool or
implant.
19. A device for cleaning a medical instrument, comprising: a
housing adapted to hold a liquid; an entry valve, the entry valve
comprising a funnel having an opening therethrough, the opening in
communication with an interior of the housing; a mixing device
received within the housing, wherein the mixing device is
configured to rotate within the housing to agitate the liquid when
the medical instrument is inserted at least partially through the
opening of the entry valve; a filter received within the housing
and in communication with the entry valve; and a collection in
communication with the filter and configured to collect material or
debris passing through the filter.
20. The device for cleaning of claim 19, further comprising a motor
interconnected to the mixing device.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation of U.S. patent
application Ser. No. 14/974,241, filed Dec. 18, 2015, now U.S. Pat.
No. 9,968,407 issued May 15, 2018, which is a continuation of U.S.
patent application Ser. No. 14/133,146, filed Dec. 18, 2013, now
U.S. Pat. No. 9,216,063 issued Dec. 22, 2015, which is a
non-provisional and claims priority from U.S. Provisional
Application No. 61/738,939, filed Dec. 18, 2012, the entire
disclosure of the foregoing priority applications are incorporated
herein by reference for all purposes.
FIELD OF THE INVENTION
[0002] The present disclosure relates to the field of medical
devices and is generally directed toward apparatus for use with
surgical instruments to clean and maintain sterility of surgical
instruments, as well as apparatus for segregating usable materials
from surgical instruments such as cortical and cancellous bone, and
methods of using the same.
BACKGROUND OF THE INVENTION
[0003] There is presently a recognized shortcoming in the art of
cleaning and sterilization of surgical tools, instruments and
implants. More specifically, there is no apparatus presently
available which permits a surgeon to clean a tool, instrument or
implant, while at the same time segregating materials that the
tool, instrument or implant is in contact with for reuse during the
same or a different procedure. For example, when a surgical
instrument is used for resection of a patient's boney anatomy, it
is desirable for the surgeon to clean the instrument periodically,
and is also desirable for the surgeon to collect the small pieces
of the patient's boney anatomy for reuse, such as in a bone fusion
or fracture repair.
[0004] Given the complexities of surgical procedures and the
various tools, instruments, implants and other devices used in the
procedures, as well as the varying anatomical differentiation among
patients, it is often challenging to provide a surgeon with the
necessary tools that may be used and maintained as sterile
throughout a particular procedure without crowding the operating
room with trays of unused instruments. It is also difficult to
provide a method and system for safely and efficiently cleaning the
variety of different sized and shaped instruments during the
procedure. It is therefore desirable to provide an apparatus
capable of cleaning a wide variety of instruments in an operating
room that is predictable and repeatable and does not obstruct the
surgeon or other professionals present during the surgery, and that
may otherwise be secured to one or more surfaces in the operating
room, all the while maintaining sterility.
[0005] It would therefore be advantageous to provide apparatus
suitable for use with a variety of instruments used in surgical
procedures that is adapted and/or configured and/or capable of
cleaning and/or sterilizing the instrument and segregating,
cleaning and preparing material that the instrument has come into
contact with during the surgical procedure for reuse. It would also
be advantageous to provide an apparatus that reduces, if not
eliminates, the problems and risks noted above. Other advantages
over the prior art will become known upon review of the Summary and
Detailed Description of the Invention and the appended claims.
SUMMARY OF THE INVENTION
[0006] According to one aspect of the present disclosure, a novel
apparatus and method is described for cleaning and/or sterilizing
an instrument, which according to one preferred embodiment also
comprises means for segregating, cleaning and preparing usable
material in contact with an instrument for later use by the surgeon
or other medical professional. The apparatus in one embodiment
provides solutions to a number of problems experienced in the prior
art, and in particular provides an apparatus that removes and
collects certain material from one or more surgical instruments for
reuse. The cleaning apparatus according to varying embodiments
disclosed herein may dry or offered in conjunction with a
pressurized liquid supply, or with a saline bath.
[0007] In one embodiment, the apparatus provides automated cleaning
of the instruments by manual operation to purge blood, bone and
other debris quickly and efficiently.
[0008] According to one embodiment, the cleaning apparatus
comprises an unobtrusive power supply, which when in use does not
distract the field of vision of the surgeon from the surgery. In
one embodiment, the apparatus is electro-mechanically driven. In
another embodiment, the apparatus is pneumatically driven.
[0009] According to one embodiment, the cleaning apparatus
comprises a receiving face that has a tapered or funneled or "duck
bill" shaped entry point, which can be oriented to any position,
and permits a surgeon to guide the instrument into the cleaning
apparatus without diverting his or her eyes from the surgical site.
In certain embodiments, the receiving face is adjustable to permit
orientation, extension and/or retraction, and in a plurality of
directions relative to the body of the cleaning apparatus.
[0010] According to one particular embodiment, the instrument entry
portal is oriented to grab and stabilize the instruments, which are
often long and unbalanced, and permits the surgeon to leave the
instrument at least partially within the cleaning apparatus for
continued cleaning to enable the surgeon to free his hands
temporarily while he uses another instrument. In one embodiment, an
auditory or other signal may be provided to the surgeon once all
debris has been sensed by the cleaning apparatus as having been
removed from the instrument.
[0011] Incorporated by reference in their entireties are the
following U.S. patents and patent applications directed generally
to methods and apparatus related to surgical procedures, thus
providing written description support for various aspects of the
present disclosure. The U.S. patents and pending applications
incorporated by reference are as follows: U.S. Pat. Nos. 7,957,824,
7,844,356 and 7,658,610, and U.S. Pat. Pub. Nos. 20100217336,
20090138020, 20090087276 and 20080114370.
[0012] One having skill in the art will appreciate that embodiments
of the present disclosure may have various sizes. The sizes of the
various elements of embodiments of the present disclosure may be
sized based on various factors including, for example, the type or
style of the instruments to be used in the surgical procedure, the
anatomy of the patient or desired scope of the surgical procedure,
the preferences of the surgeon or person using the apparatus, the
surgical site location, physical features of the instruments used
with the apparatus described herein, including, for example, width,
length, shape, range of motion and thickness, and the size of the
instruments to be used with the apparatus.
[0013] Embodiments of the present disclosure describe a multitude
of attachments to stabilize the apparatus within the surgical
field. This may include, by way of example but not limitation,
direct attachment to an appropriately selected structure by
magnetic attraction or by mechanical coupling to a surgical drape,
frame or the operating table.
[0014] Embodiments of the present disclosure offer several
advantages over the prior art including, for example, enhancing the
speed and efficacy of the procedure, the ability to scavenge and
separate tissue from the instrument, the disposability of certain
instruments and/or implants, lower risk of infection, greater
efficiency in completing a surgical procedure, more assistance for
the surgeon from the physician's assistant, a more consistent and
controlled method of cleaning an instrument via an apparatus (as
opposed to an individual), and fewer and/or less expensive or
complex instruments in a surgical site, among other advantages.
Furthermore, by reducing the need for the constant passing of
instruments between surgical personnel for cleaning may reduce the
potential for injury.
[0015] One having skill in the art will appreciate that embodiments
of the present disclosure may be constructed of materials known to
provide, or predictably manufactured to provide the various aspects
of the present disclosure. These materials may include, for
example, stainless steel, titanium alloy, aluminum alloy, chromium
alloy, and other metals or metal alloys. These materials may also
include, for example, PEEK, carbon fiber, ABS plastic,
polyurethane, resins, particularly fiber-encased resinous materials
rubber, latex, synthetic rubber, synthetic materials, polymers, and
natural materials.
[0016] One having skill in the art will appreciate that embodiments
of the present disclosure may be used in conjunction with devices
that employ automated or semi-automated manipulation. Embodiments
of the present disclosure may be designed such that the apparatus
may be surgeon-driven, such as by a hand trigger or foot pedal, or
may be automated by receiving an input from a photoelectric or
proximity sensor detecting the presence of an instrument adjacent
the apparatus, or alternatively controlled programmatically by a
computer controller, by servo-controlled mechanisms, by
hydraulically-driven mechanisms, by pneumatically-driven mechanisms
or by piezoelectric actuators. It is expressly understood for
purposes of this disclosure that other types of machinery may be
employed in the systems and methods described herein.
[0017] The Summary of the Invention is neither intended nor should
it be construed as being representative of the full extent and
scope of the present disclosure. The present disclosure is set
forth in various levels of detail in the Summary of the Invention
as well as in the attached drawings and the Detailed Description of
the Invention and no limitation as to the scope of the present
disclosure is intended by either the inclusion or non-inclusion of
elements, components, etc. in this Summary of the Invention.
Additional aspects of the present disclosure will become more
readily apparent from the Detailed Description, particularly when
taken together with the drawings.
[0018] The above-described benefits, embodiments, and/or
characterizations are not necessarily complete or exhaustive, and
in particular, as to the patentable subject matter disclosed
herein. Other benefits, embodiments, and/or characterizations of
the present disclosure are possible utilizing, alone or in
combination, as set forth above and/or described in the
accompanying figures and/or in the description herein below.
However, the claims set forth herein below define the
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which are incorporated in and
constitute a part of the specification, illustrate embodiments of
the disclosure and together with the general description of the
disclosure given above and the detailed description of the drawings
given below, serve to explain the principles of the
disclosures.
[0020] It should be understood that the drawings are not
necessarily to scale. In certain instances, details that are not
necessary for an understanding of the disclosure or that render
other details difficult to perceive may have been omitted. It
should be understood, of course, that the disclosure is not
necessarily limited to the particular embodiments illustrated
herein.
[0021] In the drawings:
[0022] FIG. 1 is a perspective view of a cleaning apparatus
according to one embodiment of the present disclosure;
[0023] FIG. 2 is an exploded view of the apparatus shown in FIG.
1;
[0024] FIG. 3 includes several perspective views of components used
with the apparatus shown in FIG. 1;
[0025] FIG. 4 includes two partial sectional views of the apparatus
shown in FIG. 1 in two positions of use;
[0026] FIG. 5 is a perspective view of a cleaning apparatus
according to one alternative embodiment of the present
disclosure;
[0027] FIG. 6 includes perspective views of components used with
the apparatus shown in FIG. 5;
[0028] FIG. 7 is an exploded view of the apparatus shown in FIG.
5;
[0029] FIG. 8 includes two partial sectional views of the apparatus
shown in FIG. 5 in two positions of use;
[0030] FIG. 9 is a perspective view of a cleaning apparatus
according to one embodiment of the present disclosure;
[0031] FIG. 10 includes perspective views of the adjustable base
and cover for the apparatus shown in FIG. 9;
[0032] FIG. 11 is a top perspective sectional view of the apparatus
shown in FIG. 9 with the cleaning brushes removed;
[0033] FIG. 12 includes a another perspective and a detailed view
of a cleaning apparatus according to an alternate embodiment of the
present disclosure;
[0034] FIG. 13 is a top plan view of the base of the apparatus
shown in FIG. 12;
[0035] FIG. 14 is a detailed view of the apparatus shown in FIG.
13;
[0036] FIG. 15 includes perspective views of a cleaning apparatus
according to one embodiment of the present disclosure;
[0037] FIG. 16 includes perspective views of components used with
the apparatus shown in FIG. 15;
[0038] FIG. 17 is a front perspective view of the cleaning
apparatus shown in FIG. 15;
[0039] FIG. 18 is a sectional view of the apparatus shown in FIG.
15;
[0040] FIG. 19 is a perspective view of the apparatus shown in FIG.
15 according to one alternative embodiment, wherein the apparatus
is pneumatically driven;
[0041] FIG. 20 is a schematic view of the apparatus shown in FIG.
19; and
[0042] FIG. 21 is a perspective view of one coupling mechanism for
attaching a cleaning apparatus to an operating table.
DETAILED DESCRIPTION
[0043] As shown in the appended FIGS. 1-21 and described in further
detail herein, the present disclosure relates to a cleaning
apparatus that has the ability to clean a variety of instruments
and instrument types, and may provide a combination of removal and
collection of certain material(s) from one or more surgical
instruments. The cleaning apparatus may be a dry cleaning process
or offered in conjunction with a saline or sterile liquid solution.
In one embodiment, the cleaning apparatus continuously purges
blood, bone and other debris quickly and efficiently, and may
further comprise a vacuum pump or certifuge to facilitate the
removal and purging of debris from an instrument.
[0044] According to various embodiments described herein, the
present disclosure further relates to a cleaning apparatus which
preferably comprises one or more manually, electronically or
pneumatically operated cleaning elements disposed in a receiving
area of the cleaning apparatus which are preferably oriented to
contact and thereby clean a wide variety of instruments or tools
used by surgeons and other surgical professionals. In some
embodiments, the one or more cleaning elements are operated
manually. In another embodiment, they are operated by a sensor that
detects the presence of an instrument to be cleaned. For example, a
proximity or photoelectric sensor may be utilized to detect the
presence of an instrument, which is typically made from a metal or
metal alloy.
[0045] Several preferred embodiments of the cleaning apparatus are
shown in FIGS. 1-21. According to the device depicted in the
Figures, one aspect of the present disclosure is that the cleaning
apparatus provides means for containing, ingesting and/or
collecting whatever material/debris is attached to or has been
retrieved by the instrument. In one embodiment, the cleaning
mechanism comprises multiple compartments or zones to permit this
containment, ingesting, segregation and collection to occur.
[0046] According to one embodiment, the cleaning apparatus
comprises a collection tray or compartment that may be removed
easily and the material contained therein processed. For example,
material captured by the collection tray may include one or more
types of bone, which may be processed for use in a subsequent
surgical procedure or in some embodiments in the same procedure as
the one in which the bone was obtained. The collected bone material
may be used, for example, in a surgical fusion procedure as bone
graft. In one embodiment, the cleaning apparatus further comprises
a bath of chemical solution to continuously clean and sterilize the
bone or other reusable materials collected by the cleaning
apparatus until those materials are retrieved by the surgeon or
other medical professional for reuse.
[0047] In a preferred embodiment, the cleaning apparatus houses at
least one brush for removing material from the instrument to be
cleaned, and may comprise a plurality of brushes. Brushes may be
fine or coarse brushes, depending on the instruments to be cleaned,
and at least in some embodiments may be removable and replaceable
depending on the application and the type of surgical procedure
(and hence, the type of instruments that are going to be utilized
in that surgical procedure). In one embodiment, the brushes are
disposable. Brushes are preferably rotational brushes, but may
alternatively be belt driven brushes and may be grooved, and which
are coupled to a motor or other power source for supplying the
rotational or translational force needed to move the brushes when
an instrument is present inside the housing. In one embodiment, the
motor is activated by a relay or solid state motor starter, which
in turn is activated by a sensor, such as a proximity or
photoelectric sensor, which detects the presence of an instrument
inside the housing and signals the motor to rotate the brushes.
[0048] In one embodiment, the cleaning apparatus also houses a
fluid reservoir, which may reside adjacent to the brushes. In one
embodiment, the reservoir is connected to one or more fluid
injection ports, which are oriented to distribute fluid from the
reservoir to the surface of the brushes to lubricate the brushes
and/or the surfaces of the instruments. In a preferred embodiment,
the sensor which triggers rotation of the brushes also signals a
pump located in the reservoir to distribute approximately 5 to 50
cc of saline solution, for example, to the fluid injection ports to
lubricate the brushes prior to, and/or during the cleaning
operation. In an alternative embodiment, the brushes are positioned
to at least partially become submerged in the fluid reservoir, so
that during their rotation the brushes pass through the fluid in
the reservoir and lubricate in this manner. Although saline is used
here by way of example, it is expressly understood that other fluid
maybe suitable for use with the cleaning apparatus without
departing from the novel aspects of the present disclosure.
[0049] Referring now in particular to FIGS. 1-4, one embodiment of
the present disclosure is shown. According to this embodiment, a
cleaning apparatus 10 is manually operated and permits, for
example, a single instrument to be inserted linearly into the
cleaning apparatus 10 by inserting the instrument into an entry
valve 30. As used herein, the term "entry valve" refers to an entry
port or access port through which the user inserts the instrument
or other device to be cleaned into the internal cleaning portion or
chamber of the cleaning apparatus 10. The entry valve 30 may be an
opening of a specific geometric shape, for example, but not limited
to, a circular, oval, square, rectangular, cross-shaped or any
other suitable shape sized to allow insertion of the device being
cleaned into the cleaning portion of the device. In further
embodiments of the present invention, the entry valve 30 may
comprise a cover over the valve opening.
[0050] In some embodiments of the present invention, the entry
valve 30 may comprise a cover constructed from a flexible, pliable,
conformable, or bendable material with a hole or slot passing
through the cover, to allow an instrument to be inserted
therethrough. The cover may be sized to substantially cover the
entire open surface area of the entry valve opening. For example, a
flexible slotted cover will keep the internal components of the
cleaning apparatus at least somewhat isolated from the outside
environment when the apparatus 10 is not in use. However, when the
user is ready to clean in instrument, the flexible slotted cover
will reversibly open to allow the instrument to be inserted through
the cover and the entry port, into the cleaning portion of the
cleaning apparatus 10. In some embodiments of the present
invention, a hole or slot in a flexible cover may flexibly and
reversibly mold around the instrument that has been inserted
therethrough to provide a liquid-tight seal. When the user is
finished cleaning the device, the hole or slot in the flexible
cover allows the user to easily withdraw the instrument, and then
the hole or slot in the flexible cover reseals to isolate the
apparatus' internal components from the outside environment. An
entry valve 30 cover may be constructed from any suitably flexible
and moldable plastic material.
[0051] In some embodiments of the present invention, the entry
valve 30 may be an opening placed in the center of a circular
planar structure that is built into or attached to the top end of a
circular body 12. In a preferred embodiment of the present
invention, the entry valve 30 may comprise a circular funnel-shaped
structure in which the lower internal portion of the funnel-shaped
structure terminates with a rectangular-shaped, or slotted,
opening. In such an embodiment, the funnel-shaped structure
comprises two opposing, angled planar structures, which nearly
intersect at the bottom of the funnel structure, but instead
terminate just before intersection, to leave a gap that forms the
rectangular opening at the bottom of the funnel. As used herein,
such an entry valve 30 with a funnel terminating with a slotted
opening may be referred to as a "duck bill" entry valve.
[0052] In further embodiments of the present invention, the entry
valve 30 may further comprise a circular shaped funnel that
terminates with a circular or oval opening. A benefit of the an
entry valve 30 comprising a funnel shaped structure located above
the access or entry port into the internal cleaning structures of
the cleaning apparatus 10 is that the funnel will assist the user
with guiding the instrument into the cleaning apparatus 10. The
funnel shape is especially beneficial in cases where the user must
maintain visual focus away from the cleaning apparatus 10, e.g. on
a delicate surgical procedure, but still needs to quickly insert
the medical device for cleaning. The combination of the duck bill
entry valve 30 and the funnel structure results in the user only
needing to position the device to be cleaned inside the large open
area of the funnel, and subsequent insertion, cleaning and
withdrawal of the device may be easily accomplished by touch.
[0053] In addition, a funnel-structure integrated into the entry
valve 30 facilitates a cleaner operation of the cleaning apparatus
10, in that blood, bone, and/or tissue on the device being cleaned
will tend to be directed into the cleaning apparatus 10, instead of
on to the floor, table, or surrounding areas. This will facilitate
better recovery of these materials, and provide better sterility
among other instruments and apparatus in the work area.
[0054] In some embodiments of the present invention, the entry
valve 30 may comprise threads that may allow a screw attachment
with receiving threads on the body 12. In further embodiments, the
entry valve 30 may comprise a snap attachment, which physically
couples to a receiving snap attachment built into the body 12. In
still further embodiments, the outer circumference of the entry
valve 30 may sit inside a ledge built into the top end of the body
12, wherein the entry valve 30 is held flush against the body by
gravity. In a further embodiment of the present invention, the
entry valve 30 comprises a circular opening positioned at the
narrow, terminal end of a funnel structure, wherein the top wide
portion of the funnel structure provides threads around the outside
circumference of the wide funnel structure, such that the threads
mate with corresponding threads located at the top end, on the
inside wall of the body 12.
[0055] Referring now to FIGS. 2 and 3, the body 12 preferably
provides a housing for at least one brush cartridge 20 and at least
one biasing member or spring 14; e.g. the brush cartridge 20 and
spring 14 are located inside a hollow body 12. In some embodiments
of the present invention, the body 12 comprises a cylinder
comprising a top end, a bottom end, and a length spanning between
the two ends. The length may comprise a constant cross-sectional
area for the entire length of the cylinder. The top end of the body
12 preferably receives the entry valve 30, e.g. the duckbill entry
valve, and may be threaded to receive threads located on the entry
valve 30. Threads may be located on the inside wall of a
cylindrical body 12, or on the outside wall of a cylindrical body
12. The bottom end of the body 12 may receive a collection or
specimen jar 40. In preferred embodiments of the present invention,
the bottom end of the body 12 may be threaded to receive threads on
the specimen jar 40, to allow the easy attachment and detachment of
the specimen jar 40 to the bottom end of the body 12.
[0056] In further embodiments of the present invention, the body 12
may comprise a lip or ledge located on the top end of the body 12,
which is constructed to receive the outside circumference of the
entry valve 30. In still further embodiments of the present
invention, the inside wall of the body 12 may contain a slot
positioned near the top end of the body 12 for receiving an o-ring,
gasket, or seal. Placement of the entry valve 30 into the top end
of the body 12 may then facilitate compression of the o-ring,
gasket, or seal between the inside wall of the body 12 and the
outside circumference of the entry valve 30 to make a liquid-tight
seal. In still further embodiments of the present invention, the
inside wall of the body 12 may contain a slot positioned near the
bottom end of the body 12 for receiving an o-ring, gasket, or seal.
Placement of the specimen jar 40 into the bottom end of the body 12
may then facilitate compression of the o-ring, gasket, or seal
between in the inside wall of the body 12 and the outside
circumference of the specimen jar 40 to make a liquid-tight
seal.
[0057] In some embodiments of the present invention, the body 12
may comprise a means for engaging and rotating the brush cartridge
20. A means for engaging and rotating may comprise any structure or
structures for slidably and reversibly connecting the inside wall
of the body 12 with the outside wall of the brush cartridge 20,
such that the mechanical connection allows the brush cartridge 20
to move reversibly in either direction along the longitudinal axis
of the body 12, as well as allowing the brush cartridge 20 to
rotate around the longitudinal axis of the body 12. As used herein,
the term "reversibly" used in context with the brush cartridge 20,
refers to the brush cartridge 20 being capable of moving both up
and down along the longitudinal axis of the body 12.
[0058] In some embodiments of the present invention, the means for
engaging and rotating the brush cartridge 20 may comprise a first
structure comprising at least one recess, slot, groove, or channel,
which may be integrally constructed into the inside wall of the
body, wherein the first structure extends in a spiral fashion
around the inside wall of the body 12, for at least a portion of
the length of the body 12. Further illustration of this concept is
provided in relation to FIGS. 7-8 below. As used herein, "pitch"
refers to the number of complete rotations of a slot, groove, or
channel, per unit length of the body. The means for engaging and
rotating further comprises a second structure comprising at least
one of a thread, projection, tab, extension, or other suitable
structure, physically attached or integrally formed onto the
outside wall of the brush cartridge 20, such that the second
structure slidably and reversibly fits into the first
structure.
[0059] Alternatively, the means for engaging and rotating the brush
cartridge 20 may comprise a first structure comprising at least one
thread, ridge, rib, spine, or other suitably constructed linear
prominence, which may be integrally constructed into the inside
wall of the body 12, wherein the first structure extends in a
spiral or helical fashion around the inside wall of the body 12,
for at least a portion of the length of the body 12. In this case,
the means for engaging and rotating further comprises a second
structure comprising at least one recess, slot, groove, or channel,
or other suitable structure, physically attached or integrally
formed onto the outside wall of the brush cartridge 20, such that
the second structure fits around, within and/or couples to the
first structure.
[0060] As a result of these physical relationships between the
first and second structures of the means for engaging and rotating,
movement of the brush cartridge 20 along the longitudinal axis of
the body 12 results in the second structure, and the brush
cartridge 20, to move along the first structure track mounted to
the inside wall of the body. This longitudinal movement causes
rotation of the brush cartridge 20 around the longitudinal axis of
the body 12, and thus causes rotation of one or more brushes 22
located inside the brush cartridge 20 to rotate around, and
relative to, the instrument or other medical device being cleaned.
The pitch of the first structure will define the number of
rotations that the brush cartridge 20 provides for per unit length
of travel along the longitudinal axis.
[0061] In still further embodiments of the present invention, at
least one of the first structure and second structure of the means
for engaging and rotating the brush cartridge 20 within the
cleaning apparatus body 12 may comprise a means for reducing
friction between the first and second structures. Examples of a
means for reducing friction between the first and second structures
include, but are not limited to, bearings, ball bearings, rollers,
wheels, non-stick surfaces, lubricant, and any other suitable
structure, device or composition for reducing friction.
[0062] As one skilled in the art will recognize, the need for a
means for reducing friction will depend greatly on the pitch
selected for the first structure for engaging and rotating the
brush cartridge 20. In other words, if a large number of rotations
of the brush cartridge 20 are desired, the "track" defined by the
first structure formed on the inside wall of the body, will have a
small angle relative to the longitudinal axis of the body 12. This
will result in a larger minimum force to move the brush cartridge
20 within the body 12, which may benefit from the use of bearings
positioned with the "track." Conversely, fewer rotations of the
brush cartridge 20 will result in a track with a relatively large
angle relative to the longitudinal axis of the body 12, resulting
in a smaller minimum force to move the brush cartridge 20 within
the body 12, in which case a means for reducing friction may not be
beneficial.
[0063] In still further embodiments of the present invention, the
means for engaging and rotating the brush cartridge 20 may comprise
at least one locating feature attached to the inside wall of the
body 12, which physically engages at least one matching locating
feature mounted to the outside wall of the brush cartridge 20. The
at least one locating feature of the body 12 may comprise a surface
extending from the inside wall of the body 12, the surface
comprising at least an angled bottom edge and a tapered top edge.
Similarly, the at least one located feature of the brush cartridge
20 may also comprise a surface extending from the outside wall of
the brush cartridge 20, wherein this second surface comprises at
least an angled top edge and a tapered bottom edge. The two angled
edges are configured such that that they are angled to the same
degree and in the same direction.
[0064] Thus, in operation, when the user forces the brush cartridge
20 down into the body, in the longitudinal direction, the bottom
tapered edge of the brush cartridge 20 slides over the top tapered
edge of the body 12. The brush cartridge 20 advances downward until
the bottom end of the cylinder and/or the spring 14 prevents
further movement in the longitudinal direction. Once the user
removes the force used to push the brush cartridge 20 down, the
spring 14 starts to move the brush cartridge 20 back to its
original top position, however, now the top angled edge of the
brush cylinder 20 impinges against the bottom angled edge of the
cleaning apparatus body 12, preventing the two surfaces from
sliding across each other in the longitudinal direction. Instead,
the two opposing angled edges slide against each other, resulting
in rotational movement of the brush cartridge 20 around the
longitudinal axis of the body 12 as best shown in FIG. 4. The first
and second surfaces may also both comprise a corresponding width.
The combination of these widths and the angle of the angled edges
will define the number of rotations achievable by the brush
cartridge 20 as the spring 14 advances it back to the top starting
position.
[0065] Other possible embodiments of the present invention for a
means for engaging and rotating the brush cylinder are incorporated
herein by reference in their entirety, for enablement purposes,
including U.S. Pat. Nos. 7,982,885, 7,518,598, 6,908,247, and
6,745,424, U.S. Patent Application Publication No. 2013/0055514 and
PCT Patent Application Publication Nos. WO 2013/076026 and WO
2009/091709.
[0066] A biasing member or spring 14 is preferably positioned
within the body 12 of the cleaning apparatus 10, between the brush
cartridge 20 and the specimen jar 40. As one of ordinary skill in
the art will recognize, the spring 14 is preferably selected to
provide a force sufficient to return the brush cartridge 20 from a
bottom position located at the bottom end of the body 12 to a
loading position wherein the brush cartridge 20 is located at the
top end of the body 12. However, a balance will be made such that
the spring 14 is not designed to be so stiff as to require the user
to apply excessive force to push the brush cartridge 20 downward.
In some embodiments of the present invention, at least one spring
14 is positioned between the brush cartridge 20 and the specimen
jar 40. A spring 14 used in some of the embodiments may comprise at
least one coil spring, flat spring, helical spring, leaf spring, or
any other suitable spring. In some embodiments of the present
invention, the cleaning apparatus 10 may comprise at least one
spring 14 comprising a compression spring, a constant spring, and a
variable spring.
[0067] In some embodiments of the present invention, the cleaning
apparatus 10 may comprise a torsion spring, either alone or in
combination with the means for engaging and rotating the brush
cartridge. As used herein, a "torsion spring" is a spring that
provides a torque or twisting force such that the end of spring
rotates through an angle is a load is applied (or released).
[0068] In some embodiments of the present invention, a coil spring
(or multiple springs) 14 may be selected with an outside diameter
sized such that the coil spring 14 is positioned inside the
apparatus body, against the inside wall of the body. A small gap
may be provided between the spring 14 in the inside wall of the
body 12, to allow the coil spring 14 to function properly during
compression and extension of the spring 14. Such a gap will also be
large enough to avoid accidental contact of the spring 14 with the
first structure of the means for engaging and rotating the brush
cartridge 20. The coil spring 14 may further comprise a top end and
a bottom end, wherein the top end of the coil spring 14 abuts
against the bottom surface of the brush cartridge 20. The bottom
end of the coil spring 14 may be constructed to rest on top of a
surface extending radially outward from the inside wall of the body
12, or alternatively, the bottom end of the spring 14 may rest on a
portion of the top surface of the specimen jar 40. Sizing a coil
spring 14 to have an outside diameter as close as reasonably
possible to the inside diameter of the brush cartridge 20 will
assist with maintaining the shape and spring force generated by the
coil spring 14 is it is compressed and released.
[0069] In further embodiments of the present invention, the spring
14 may comprise a spring with an outside diameter substantially
less than the inside diameter of the body 12. Such a spring design
will eliminate potential unwanted physical rubbing between the
outside diameter of the spring 14 and the first structure of the
means for engaging and rotating the brush cartridge 20; e.g. spring
contact with a ridge, thread, notch, etc. The top end of a spring
14 with a small diameter relative to the body 12 diameter may be
physically attached to, and abut against, the bottom surface of the
brush cartridge 20 to assist with maintaining the vertical
alignment of the spring 14, relative to the longitudinal axis of
the body 12. In still further embodiments of the present invention,
the bottom end of the spring 14 may be physically attached to a
portion of the top surface of the specimen jar 40. For example, a
bridge may extend across the top surface of the specimen jar 40,
providing a surface for the spring 14 to impinge against, providing
a stopping barrier to allow the spring 14 to be compressed.
Similarly, such a bridge may extend across the bottom end of the
body 12.
[0070] It is desirable to select a spring 14 whose cross-sectional
area is small relative to the cross-sectional area of the cleaning
apparatus body 12. This is because it is desirable to maintain as
much of the internal volume of the body 12 as possible in an empty
state, so that debris (e.g. bone matter, tissue, etc.) may fall
unhindered into the specimen jar 40. This point also illustrates
that it may be desirable to select a spring 14 with as small an
outside diameter as is reasonable, and with as few coils as is
possible.
[0071] Alternatively to a spring 14, some embodiments of the
present invention may incorporate a piston or other type of biasing
member, wherein the at least one biasing member is placed within a
cylindrical housing. A piston may provide the advantage of
virtually eliminating surfaces on which debris removed from the
instrument being cleaned can collect. A piston may also facilitate
easier cleaning between uses. In still further embodiments, a
piston may comprise some other reversibly compressible element
other than a spring; e.g. an elastomere, a fluid, a gas, etc.
[0072] At least one filter 44 is preferably positioned
substantially within the specimen jar 40. In some embodiments of
the present invention, a filter 44 may comprise an outside
cylindrical wall and an open top face. The open top face allows
both liquid and solid particulate to settle by gravity from the
brush cartridge 20 exit into the internal volume formed by the
filter 44 cylindrical wall. The filter 44 further comprises a
closed bottom face. The bottom face may comprise a mesh, filter or
screen material, wherein liquid and fine particles can pass through
the bottom face. However, larger particles are retained within the
volume formed by the filter 44. The hole size and shape of the
filter 44 may be sized and selected for a particular
application.
[0073] For example, a bottom face comprising a stainless steel mesh
may be selected with a Tyler mesh size of 80, which will capture
all particles with an average diameter of greater than 0.180 mm.
Alternatively, a bottom face may be selected to capture finer
particles; e.g. a Tyler mesh size of 325 corresponding to allowing
all particles smaller than 0.045 mm to pass through the filter.
Multiple filters 44 may be used in series, as needed for a
particular application. In some embodiments, multiple filters 44
are stacked inside of each other, to provide a series of filtration
steps to the liquid passing through the cleaning apparatus 10.
[0074] In some embodiments of the present invention, the generally
cylindrical wall of the filter 44 may also be constructed of a
mesh, filter, or screen material, wherein liquid and fine particles
can pass through the cylindrical wall. This may be desirable for
application where the user is generating relatively large amounts
of debris, such that the bottom face becomes completely covered
with debris and the holes within the mesh, filter, or screen become
occluded and can no longer pass liquid. In this situation, a
cylindrical wall comprising a mesh, filter, or screen material will
provide additional surface area for "filtration" and may enable the
user to perform longer procedures without the need to empty the
filter 44.
[0075] In some embodiments of the present invention, the filter 44
is designed to be autoclaved and reused. Therefore, the filter 44
(as well as any of the other components of the apparatus for
cleaning) may be constructed from materials that are suitable for
typical autoclaving conditions (121-123.degree. C. at 15 psig for
at least 30 minutes). Suitable materials of construction for
autoclaving include, but are not limited, to stainless steel,
borosilicate glass, polypropylene, and polycarbonate.
[0076] In other embodiments of the present disclosure, the filter
44 is disposable. In other embodiments, the filter is substantially
disc shaped and does not reside substantially within the specimen
jar 40, but rather resides immediately adjacent and above the
specimen jar 40.
[0077] In preferred embodiments of the present invention, a
specimen jar 40 is provided. A specimen jar 40 provides an internal
volume preferably to house the filter 44, in which the material
removed from the instrument is collected. In some embodiments of
the present invention, a specimen jar 40 may be an extension of the
body 12, wherein the specimen jar 40 and body 12 are one piece and
the specimen jar 40 is positioned below the spring 14 and the brush
cartridge 20. In other words, in some embodiments of the present
invention, the body 12 of the cleaning apparatus 10 is a single
piece that houses the brush cartridge 20, the spring 14, and the
filter 44, and is capped on the top end by an entry valve 30, and
is capped on the bottom end with a means for draining the body.
[0078] In some further embodiments of the present invention, a
specimen jar 40 may be a separate and independent element of the
cleaning apparatus 10, wherein the specimen jar 40 may be attached
and detached from the bottom end of the body 12. A specimen jar 40
may comprise a hollow cylindrical sidewall further comprising a
length, an inside diameter, and an outside diameter. In some
embodiments the sidewall of the specimen jar 40 may comprise an
inside diameter and outside diameter that are substantially equal
to the inside and outside diameters of the body, respectively. The
top end of the specimen jar 40 may comprise a substantially open
surface area, to allow solids and liquids to freely flow and settle
from the body 12 into the internal volume of the specimen jar
40.
[0079] In still further embodiments of the present invention, the
top end of the specimen jar 40 reversibly interconnects with the
bottom end of the body 12, utilizing a means for connecting. A
means for connecting may comprise at least one of mating threads,
or any other suitable quick-disconnecting attachments known to one
of ordinary skill in the art. Further, the top end of the specimen
jar 40 may provide a lip, ledge, or recess, etc. that is configured
to receive an o-ring, gasket, or seal such that placement of the
specimen jar 40 into the bottom end of the body 12 may then
facilitate compression of the o-ring, gasket, or seal between the
inside wall of the body 12 and the outside circumference of the
specimen jar 40 to make a liquid-tight seal.
[0080] In some embodiments of the present invention, the specimen
jar 40 may comprise an exit port positioned within a bottom face of
the specimen jar 40. An exit port incorporated into the bottom of
the specimen jar 40 will facilitate removal of solids and liquid
from cleaning apparatus 10. Such removal may be by passive gravity
draining through the exit port, or by some active means for
draining. Examples of active means for draining including, applying
a vacuum source to the exit port, applying a pressure to the entry
valve 30 of the body 12 to force flow through the exit port, and/or
applying a centrifugal force to the cleaning apparatus 10 to force
flow through the exit port.
[0081] In some embodiments of the present invention, an exit port
in the specimen jar 40 may simply be an opening. For example, a
hose barb may be attached to the exit port, to facilitate
attachment of tubing to allow liquid to drain from the cleaning
apparatus 10, through the tubing, to a collection vessel. A hose
barb may also be used to apply a vacuum source to the specimen jar
40. For such an embodiment, a system for cleaning an instrument may
comprise the cleaning apparatus, a liquid trap, and a vacuum
pump.
[0082] In still further embodiments of the present invention, the
exit port may further comprise a valve, such that the valve can be
opened and closed as desired by the user. As would be known to one
of ordinary skill in the art, any hose barb, valve, or other
desirable fitting, may be attached to the bottom end of the
specimen jar by welding the fitting to the specimen jar, by use of
threaded connections, compression fittings, sanitary fittings, or
any other suitable connections. Further illustration of this
concept is provided in relation to FIG. 7 and described below. In
some embodiments of the present invention, the specimen jar 40 does
not include an exit port. In such embodiments, the specimen jar 40
may be removed from the body 12 to facilitate removal of the liquid
and debris that have collected within the specimen jar 40. In some
further embodiments, a lid may be provided that reversibly attaches
to the open top end of the specimen jar 40. This may enable the
specimen jar 40 to be placed in a centrifuge to enable more
complete separation of the solids from the liquids, especially in
cases where the filter 44 comprises a very fine mesh, screen, or
filter material.
[0083] In some further embodiments of the present invention, the
specimen jar 40 may provide a surface that physically abuts against
the lower end of the spring 44, thus providing a physical stop that
allows the spring 44 to be compressed when the user applies a
downward force to the brush cartridge 20. In some embodiments, such
a surface may be a ledge or lip that extends from the inside wall
of the specimen jar 40, around the inner circumference of the
specimen jar 40, wherein the inside diameter of the ledge or lip is
less than the outside diameter of the spring 14. Such a ledge or
lip is envisioned for embodiments wherein the spring 44 diameter is
substantially equal to the inside diameter of the body 12.
[0084] Alternatively, a surface that physically abuts against the
lower end of the spring 14 may comprise a bridge that extends
across the diameter of the open upper end of the specimen jar 40.
Such a configuration is envisioned for embodiments that employ a
spring 14 with an outside diameter that is substantially smaller
than the inside diameter of the body 12. In either embodiment, a
bridge or a ledge or lip configured into the top end of the
specimen jar 40, removal of the specimen jar 40 from the body 12
will allow both the spring 14 and the brush cartridge 20 to be
removed from the body 12.
[0085] A brush cartridge 20 is preferably provided within the
cleaning chamber and provides an internal volume in which the
instrument is physically and/or chemically cleaned. As used herein
"physical cleaning" refers to any mechanical, frictional,
vibrational, and/or ultrasonic means for applying a force to the
instrument being cleaned. As used herein "chemical cleaning" refers
to the use of a chemical agent that affects the chemical properties
of a solution stored in the brush cartridge and/or the chemical
properties of the debris being cleaned from the instrument.
Examples of chemical properties include, but are not limited to,
solubility, miscibility, surface tension, density, and
reactivity.
[0086] In some embodiments of the present invention, a brush
cartridge 20 may comprise a hollow cylindrical body comprising a
wall, a top end, and a bottom end. The wall may further comprise a
length along the longitudinal axis of the body, an inside diameter,
and an outside diameter. The outside diameter of the wall is
configured such that the brush cartridge 20 physically communicates
with the inside wall of the body 12 through the use of the means
for engaging and rotating the brush cartridge 20. As such, the
outside diameter of the brush cartridge 20 may be less than the
inside diameter of the body 12.
[0087] The length of the brush cartridge 20 may comprise a length
that is equal to or less than the length of the body 12. In some
embodiments wherein the brush cartridge 20 length is equal to the
length of the body 12, a means for engaging and rotating the brush
cartridge 20, and a spring 14, are not needed, and cleaning of the
instrument is provided only by the motion of inserting and
retracting the instrument into the brush cartridge 20 through the
entry valve 30. In such an embodiment, a separate and independent
brush cartridge 20 that is inserted into the body 12 may be
eliminated, wherein the cleaning elements (e.g. brushes) are
physically incorporated/attached directly into the body 12.
[0088] In some embodiments of the present invention, a top end of
the brush cartridge 20 may comprise a cap comprising a flat
surface, or in other words a brush cartridge cover 24, and having
an entry port therethrough. The entry port may be an opening sized
to accept insertion of the instrument therethrough. The entry port
into the brush cartridge 20 may be an opening of a specific
geometric shape, for example, but not limited to, a circular, oval,
square, rectangular, or any other suitable shape sized to allow
insertion of the device being cleaned into the brush cartridge.
According to other embodiments, the entry port comprises a second
stage or level to provide further containment and cleaning of the
instrument as it is removed from the entry port.
[0089] In some further embodiments of the present invention, the
brush cartridge entry port is substantially the same size and shape
as the entry valve 30 opening positioned above it.
[0090] In some further embodiments of the present invention, the
cleaning apparatus is configured such that when the brush cartridge
20 is at the top of the body 12 (e.g. when the spring is not
compressed), the brush cartridge entry port is substantially
aligned with the entry valve 30 opening. For example, for the case
of a circular entry valve 30 opening, a circular brush cartridge
entry port will be positioned directly below the circular entry
valve 30 opening. For example, in the case of a rectangular entry
valve 30 opening, a rectangular brush cartridge entry port will be
aligned with and directly below the rectangular entry valve 30
opening. For rectangular openings, "aligned" refers to at least the
long dimensions of the rectangular openings being parallel, with
the rectangular openings positioned directly above or below each
other. For circular openings, "aligned" refers to at least the
center points of the circular openings being positioned
substantially along the same longitudinal axis of the body.
[0091] In some embodiments of the present invention, the brush
cartridge cover 24 on the top end of the brush cartridge 20 may
comprise at least one means for attaching an instrument or other
device to the brush cartridge 20 for providing physical cleaning to
the instrument within the brush cartridge 20.
[0092] Referring now to FIG. 4, in some embodiments the bottom end
of the brush cartridge 20 may comprise a substantially open area to
allow liquid and/or debris removed from the instrument to collect
in the specimen jar 40. The bottom end of the brush cartridge 20
may further comprise an impingement plate physically attached to
the inside wall of the brush cartridge 20, such that the distal end
of the instrument 1 physically impinges against the impingement
plate when the user inserts the instrument 1 into the brush
cartridge 20, thus providing the physical stop needed to push the
instrument 1 and the brush cartridge 20 as a unit down into the
body 12, along the longitudinal axis of the body 12. In some
embodiments of the present invention, an impingement plate may
comprise a circular plate, wherein the circular plate is centered
within the circular cross-sectional area of the brush cartridge 20.
Further, the circular plate may comprise an outside diameter that
is significantly smaller than the inside diameter of the brush
cartridge 20, but still large enough that the instrument 1 can
impinge against the plate for a wide range of insertion angles of
the instrument into the entry valve 30. At least one bridging
structure may connect the impingement plate to the inside wall of
the lower end of the brush cartridge 20.
[0093] In some embodiments of the present invention, a means for
providing physical cleaning to an instrument may comprise at least
one of a brush, a sponge, a surgical towel or fabric, a vibration
mechanism, ultrasound, and any other suitable mechanical cleaning
mechanism. In preferred embodiments of the present invention, a
means for providing physical cleaning may comprise at least one
brush 22 mounted within the internal volume of the brush cartridge
20 and physically connected therein by at least one means for
attaching the at least one brush 22 to the cap and/or the bottom
end of the brush cartridge 20. In some embodiments of the present
invention, the means for providing physical cleaning may comprise
two, three, four, five, six, or more than six brushes 22. In some
further embodiments, the at least one brush 22 may comprise a
length that is equal to or less than the length of the brush
cartridge 20 sidewall. In still further embodiments, the at least
one brush 22 is mounted within the brush cartridge 20, such that
the length of the at least one brush cartridge 20 is substantially
parallel to the long axis of the body 12. In still further
embodiments of the present invention, the at least one brush 22 is
mounted within the brush cartridge 20, such that the length of the
at least one brush cartridge 20 is not substantially parallel to
the long axis of the body 12. In still further embodiments of the
present invention, the at least one brush 22 is mounted within the
brush cartridge 20, such that the length of the at least one brush
cartridge 20 is substantially perpendicular to the long axis of the
body 12. In such embodiments, it will be clear to one of ordinary
skill in the art, that suitable means for attaching the
perpendicular brushes 22 to the inside wall of the brush cartridge
20 will be needed.
[0094] Whether to the brush cartridge 20 sidewall, the cover 24, or
the brush cartridge 20 bottom end, suitable means for attaching are
contemplated as would be understood to one of ordinary skill in the
art, and are therefore not extensively described herein. For
example, for enablement purposes, a means for attaching may
comprise holes fabricated into the cap and/or bridges spanning the
bottom end. In another example, each of the at least one brush may
comprise a threaded fitting at the top end of its length that
threads into a corresponding receiving hole located in the brush
cartridge cover 24. The cover 24 is then inserted as a unit with
the brushes 22 attached, into the internal volume formed by the
brush cartridge 20 sidewall. Each brush 22 also comprises a stub
that extends from the bottom end of the each brush 22. These stubs
are then received by corresponding holes located in the bridges
that span the bottom surface of the brush cartridge 20, and support
the impingement plate. It should be clear to one of ordinary skill
in the art that such a configuration will require a snap-fit
connection between the brush cartridge cap and the brush cartridge
20 sidewall, as the physical connection of the brushes 22 with the
top holes and bottom holes will hinder the rotation of the cover 24
needed to provide a threaded connection. In another example, once
the brushes 22 and the cover 24 are in place, the cover 24 may be
secured in place using at least one screw wherein the screw passes
through the cover 24 (e.g. through a prefabricated hole) and into
the sidewall of the brush cartridge 20, wherein the screw is
aligned along the longitudinal axis of the body 12.
[0095] In some embodiments of the present invention, the at least
one brush 22 may be fixed within the brush cartridge 20, such that
the brushes 22 cannot rotate around their longitudinal axes. In
further embodiments, the brushes 22 can rotate around their
longitudinal axes. In still further embodiments, the brushes 22 may
be spring loaded to allow flexing and force application.
[0096] In some embodiments of the present invention, the at least
one brush 22 may comprise a length and a cross-sectional shape,
wherein the cross-sectional shape does not change along the length
of the at least one brush 22. For example, the cross-sectional
shape may be circular such the brush or brushes 22 comprises
cylindrical shape. Alternatively, the cross-sectional shape may be
triangular, square, or any other suitable two-dimensional shape. In
addition, a brush 22 cross-sectional shape may change with position
along the length of the brush 22. For example, a brush 22 may
comprise at least one conical section, wherein the diameter of a
circular cross-section changes with length. In another example, a
brush 22 comprising a triangular cross-section may rotate the
triangular-cross section relative to its position along the
longitudinal axis; e.g. resulting in a helical shaped brush 22.
[0097] In some embodiments of the present invention, the at least
one brush 22 may be comprised of a plurality of radially extending
brushes 22, which may be constructed from materials of construction
comprising at least one of Nylon, Polypropylene, Polyester,
Fluorinated ethylene propylene (Teflon), Polyglecaprone 25
(Monocryl), Polydioxanone (PDS), Polyglactin-910 (Vicryl),
Polyglycolic acid (Dexon) or other suitable material. In still
further embodiments of the present invention, the brush or brushes
22 may be constructed from materials that are suitable for
autoclaving.
[0098] In some embodiments of the present invention, three brushes
22 are positioned vertically within the brush cartridge 20, wherein
the outside surfaces of the brushes 22 are in physical contact with
one another along each of the brushes' lengths, and the three
brushes 22 form an internal space that is centered below the entry
valve 30 opening and the brush cartridge 20 entry port, wherein the
internal space runs the entire length of the brushes 22. In such
embodiments, the instrument to be cleaned is inserted by the user
through the entry valve 30, through the entry port, and into the
internal space formed between the three brushes 22. As the
instrument is inserted between the brushes 22, the brushes 22
provide frictional contact with the instrument, thus cleaning
debris from the instrument.
[0099] Referring again to FIG. 4, when the distal end of the
instrument abuts against the impingement plate, the brush cartridge
20 is forced downwards into the body along the longitudinal axis.
This downward movement, causes the first and second structures of
the means for engaging and rotating the brush cartridge 20 to
engage one another, causing the brush cartridge 20 to rotate around
the body's longitudinal axis. This rotational motion, in turn,
causes the brushes 22 to move in relationship to the instrument.
This rotational motion is especially effective at cleaning the
instrument, especially in configurations wherein the brushes 22 are
stationary within the brush cartridge 20; e.g. prohibited from
rotating themselves relative to the longitudinal axis.
[0100] In some embodiments of the present invention, a chemical
means for cleaning may be provided within at least one of the
apparatus body, the brush cartridge, and the specimen jar. In some
further embodiments of the present invention, a chemical means for
cleaning the instrument, comprising a liquid is provided. In some
embodiments of the present invention, a liquid may comprise at
least one of water, an alcohol, an organic, a saline solution, an
antiseptic, a preservative, formaldehyde, a stabilizer, an acid, a
base, a solvent, and any other liquid for achieving a particular
function of interest. In some further embodiments a liquid will
fill all of or less than the internal empty volume of the cleaning
apparatus. It should be clear to one of ordinary skill in the art,
that embodiments incorporating a liquid cleaning agent will
preferably incorporate o-rings, gaskets, or seals into the
connections between the various elements of the cleaning apparatus:
e.g. the body, the specimen jar, the entry valve, etc.
[0101] Referring now to FIGS. 5-8, an alternate embodiment of a
manually operated cleaning device is shown. Although not shown,
certain embodiments of the present invention may incorporate at
least one motor in place of, or in addition to, the means for
engaging and rotating the brush cartridge. In still further
embodiments of the present invention, at least one cylindrical
brush may be physically mounted lengthwise within the internal
volume of the body, wherein the at least one brush is mechanically
connected to a motor which is configured to cause rotational
movement of the at least one brush around the axis corresponding to
the length of the brush. The motor may be configured to turn on and
off when specified by the user. A motor may be powered by an AC or
DC current supply, provided by either a conventional wall socket
and/or at least one battery.
[0102] In some embodiments of the present invention an entry port
70 into the internal volume of the cleaning apparatus 50 may
comprise a hole through a lid or cap 52 on the device, wherein a
first end of a flexible joint 74 is attached to the entry port, and
a second end of the flexible joint 74 is connected to funnel-shaped
structure 76. The flexible joint 74 is provided with a hole that
passes through its entire length.
[0103] The funnel-shaped structure 76 may comprise a wide, open,
mouth section, and a narrow bottom section that terminates at hole
that passes through the flexible joint 74. In some embodiments of
the present invention, the funnel-shaped structure 76 attached to
the flexible joint 74 may comprise a "duckbill valve" as described
above. The flexible joint 74 will allow the user to orient the
funnel-shaped structure 76 at a desired angle to enable easier
insertion of the instrument into the cleaning apparatus 50.
[0104] For example, once the flexible joint 74 is at the desired
angle, the user only needs to visually place the terminal end of
the instrument into the duckbill valve 76, and then can proceed by
feel to insert the instrument sequentially through the duckbill
valve 76, flexible joint 74, and entry point into the cleaning
apparatus 50 internal volume.
[0105] An aspect of the present invention is a cleaning apparatus
50 for instruments comprising a housing 58 comprising a top
surface, a bottom surface, a top end, a bottom end, and a sidewall
that define an internal volume within the housing. In some
embodiments of the present invention, the housing comprises a
rectangular, box shape. The cleaning apparatus according to this
embodiment preferably comprises a brush assembly 60 and a
collection device 80. The brush assembly 60 includes a brush
cartridge 62 with at least one brush 65 and a brush cartridge cover
64. A biasing member, such as a spring 54, is positioned in housing
56 between the assembly 60 and the collection device 80. Various
other components are depicted in FIG. 7. The collection device 80
may include a cylindrical housing 84 and a spacer 86.
[0106] In some further embodiments of the present invention, the
top surface of the housing 58 comprises an entry port, which allows
the user to insert the instrument to be cleaned into the internal
volume of the housing 58. The entry port may comprise a hole with
any suitable geometric shape; e.g. rectangular slot, circular hole,
etc. In further embodiments of the present invention, the entry
port may comprise a cover over the hole. In some embodiments of the
present invention, the entry port may comprise a cover constructed
from a flexible, pliable, conformable, or bendable material with a
hole or slot passing through the cover, to allow the instrument to
be inserted therethrough. The cover may be sized to substantially
cover the entire open surface area of the entry port hole. In still
further embodiments the entry port may be positioned in the top end
of the housing 58.
[0107] The housing may further comprise a first structure 59 as
described above for connecting with a second structure 69 located
relative to the brush assembly 60. The joining of the first
structure 59 to the second structure 69 in this embodiment operates
in the same manner described above with respect to the cleaning
apparatus 10. Furthermore, the cleaning apparatus 50 may comprise
an exit valve 90 which has at least two positions determined by the
position of a valve handle 92 relative to the exit valve 92.
Further details relating to the cleaning apparatus are also
described above in relation to FIGS. 1-4 and are expressly
understood to have applicability to the embodiment shown in FIGS.
5-8.
[0108] Referring now to FIGS. 9-14, in some embodiments of the
present the cleaning apparatus 100 may comprise two or more
counter-rotating belt brushes 114. In some embodiments a belt brush
system 114 may comprise a first belt drive 116, a second belt drive
116, and a belt brush comprising a flexible planar surface
comprising a width, a first end, and a second end, wherein the
first and second ends are attached to one another to make a loop or
"belt". As used herein, a "belt drive" is a rotatable cylinder. The
belt brush system may be powered by a motor 120 of varying types
and sizes.
[0109] A belt drive 116 may comprise teeth or some other suitable
friction-forming surface to facilitate gripping the belt brushes
114. In some embodiments of the present invention, each first belt
drive 116 may be positioned towards the top end of the housing,
each equidistant from a longitudinal centerline that cuts the
housing into equal parts, and wherein the rotational axes of both
first belt drives 116 are perpendicular to the top surface of the
housing . In addition, each second belt drive 116 may be positioned
towards the bottom end of the housing, each equidistant from the
longitudinal centerline that cuts the housing into equal parts, but
closer together than the spacing between the two first belt drives
116, and wherein the rotational axes of both second belt drives 116
are also perpendicular to the top surface of the housing.
[0110] A belt brush 114 is then positioned around each pair of
first and second belt drives 116, such that the two belt brushes
114 make a generally V-shaped formation, wherein the open end of
the V is towards the top end of the housing, and the sharp end of
the V is towards the bottom. Thus, there is formed between the two
belt brushes 114 an interstitial space that is configured to
receive the instrument that is inserted through an opening 111 in
the top cover 110 of the cleaning apparatus 100. This space narrows
as one moves down the length of the housing, forcing the surfaces
of the two belt brushes 114 to come into contact with the distal
end of the instrument being cleaned.
[0111] The angle of the V-formation may be adjusted is required to
accommodate a particular instrument. In some embodiments, the angle
between the two belt brushes 114 is approximately within the range
of about 5.degree. to about 25.degree.. In still further
embodiments of the present invention, a combination of elastic belt
brushes 114 with moveable first drives 116 allows the user to
adjust the angle between the belt brushes 114 to a desired
setting.
[0112] For example, a belt drive 116 may comprise a cylinder that
is rotatably coupled to an axis aligned along the longitudinal
length of the cylinder. The axis may comprise a first end and a
second end, wherein at least one of the ends is attached to at
least one of the front surface and back surface of the housing. An
axis of the cylinder may comprise, for example, a threaded end
portion that extends through the front surface or back surface, to
receive a washer and a wing-nut (on an outside surface of the
housing; e.g. not within the housing) to allow the user to tighten
the wing-nut to secure the belt drive into a desired position.
[0113] The threaded end portion of the cylinder axis may be
inserted through a hole, or preferably a slot. A slot provides the
ability to slide the end portion of the cylinder axis within the
slot to a desired position and angle between the two belt brushes
114, at which point the wing-nut can be tightened to secure the
brushes 114 at that desire position. In some embodiments of the
present invention, both first belt drives 116 comprise an axis that
comprise a threaded end that are both inserted through their own
respective slots in the back surface, such that the angle between
the corresponding belt brushes 114 can be adjusted as desired, and
secured in place using a threaded wing-not, or comparable securing
mechanism.
[0114] In some embodiments of the present invention, the cleaning
apparatus 100 may further comprise a physical obstruction 106
placed in the interstitial space substantially centered within the
sharp end of the V-formation (e.g. at the narrowest point between
the two belt brushes, and towards the bottom of the housing.) The
purpose of the physical obstruction 106 is to provide a tactile
indication to the user that the instrument has been inserted to the
maximum allowable depth in the housing. In other words, as the
instrument is inserted, eventually the distal end of the instrument
will impinge against the physical obstruction 106, thus preventing
further insertion of the instrument.
[0115] In some embodiments of the present invention, a physical
obstruction 106 may comprise a triangular wedge placed with the
narrow portion of the interstitial space. A triangular wedge may
further comprise a slightly convex top surface to facilitate easier
gravimetric settling from the wedge to the bottom end of the
housing. Alternatively, a triangular wedge may comprise a slightly
concave top surface to facilitate catching the terminal end of the
instrument being cleaned to prevent the belt brushes from pulling
the medical device beyond the desired depth in the cleaning
apparatus 100.
[0116] In some embodiments of the present invention, the cleaning
apparatus 100 may comprise at least one scraper 108 that physically
communicates with at least a portion of at least one belt brush
114. In some embodiments of the present invention, a scraper 108
may comprise a flat planar structure, with a lower, leading edge
that is in physical contact with a belt brush. For configurations
that utilize two belt brushes in a V-configuration, two scrapers
108, one for each belt brush 114, may be configured just distal to,
and outside of the belt brush V-configuration, resulting in
V-configured belt brushes positioned within V-configured scrapers
108. This configuration provides a mechanical shearing force for
physically removing debris from the surface of the belt brushes
114.
[0117] In some embodiments of the present invention, a belt brush
114 comprises a brush surface mounted on a lower loop to form a
continuous laminated belt brush. A lower loop may comprise a rubber
material. The belt brush lower loop is mounted on a first belt
drive 116 and a second belt drive 116 such that the lower loop, and
consequentially the belt brush 114 itself, is held substantially
taught between the two belt drives 116. The configuration of the
belt brush 114 mounted between the two belt drives 116 results in a
first portion of the brush surface that moves downwards towards the
collection device.
[0118] This first portion of the brush surface reaches a lower-most
position in the housing, and then rotates around a belt drive 116,
resulting in a change in direction opposite to the downward motion.
Thus, the belt surface comprises a second portion between the two
belt drives 116 wherein the belt brush 114 moves upwards and away
from the collection tray 130. In some further embodiments of the
present invention, a scraper 108 is positioned in a third portion
of the belt brush 114, wherein the third portion is located between
the first and second portions, in the region where the belt is
riding on the belt drive 116 and changing directions from a
downward direction to an upward direction.
[0119] As used herein, "approach angle" refers to the angle of a
planar scraper relative to a substantially flat brush surface,
wherein 0 degrees refers to a planar scraper that is parallel to
the brush surface, wherein the leading edge of the planar scraper
is pointed in the direction that the brush surface is moving; 180
degrees refers to a planar scraper that is parallel to the brush
surface, wherein the leading edge of the planar scraper is pointed
in a direction opposite to the direct that brush surface is moving;
and 90 degrees refers to a planar scraper this perpendicular to the
brush surface. In some embodiments of the present invention, the
approach angle of a planar scraper relative to a substantially flat
brush surface ranges from about 90 to about 180 degrees. In still
further embodiments of the present invention, the approach angle of
a planar scraper ranges from about 120 to about 160 degrees.
[0120] In still further embodiments of the present invention, a
debris ramp may be positioned between the at least one first belt
drive and the collection tray 130. A debris ramp may comprise at
least one flat planar structure that is used to divert debris that
are gravimetrically removed by the at least one belt brush 114
and/or at least one scraper 108, to direct the debris into the
collection tray 130. In still further embodiments of the present
invention, a debris ramp may comprise two or more planar surface
constructed in a funnel shape to divert and direct debris from the
belt brushes 114 to the collection tray 130.
[0121] In some further embodiments of the present invention, a
scraper 108 may further comprise a rectangular slot cut
therethrough, wherein a portion of a belt brush 114 intersects the
scraper 108 by passing through the rectangular slot.
[0122] In some embodiments of the present invention, at least both
of the first belt drives and second belt drives 116 are in
mechanical communication with a motor 120 which is configured to
rotate the belt drives 116, which in turn causes the belt brushes
114 to move relative to the housing.
[0123] In some embodiments of the present invention, the cleaning
apparatus may comprise a collection tray 130 positioned below the
narrow end of the belt brush V-configuration, such that any debris
and material removed from the instrument fall by gravity and are
collected in the collection tray 130. In some embodiments of the
present invention, a collection tray may comprise a box- or
tray-like structure with an open top, through which the debris
fall. In still further embodiments of the present invention, the
housing of the cleaning apparatus 100 comprises a slot, receptacle,
or port that allows the user to insert and remove the collection
tray 130, to facilitate emptying debris from the apparatus 100, as
needed.
[0124] In still further embodiments of the present invention, the
cleaning apparatus 100 may comprise flexible hinge element 118,
which allow the user to position the cleaning apparatus 100 at an
angle that facilitates the gravimetric collection of debris within
the collection tray 130, but also enables the user to position the
device in an ergonomically favorable position. For example, a back
surface of the device may reversibly connect to a first hinge 118
that allows the device to rotate around the long, longitudinal axis
of the cleaning device. Further, the first hinge 118 may comprise a
connection surface that attaches to a second hinge that is
perpendicular to the first hinge, wherein the second hinge is
attached either directly to a stationary object (e.g. table, desk,
etc.), or the second hinge is attached to a second surface which is
subsequently attached to a stationary object. A second hinged
element 128 may also be provided to permit rotation about the
lateral axis.
[0125] In some embodiments of the present invention, the cleaning
apparatus 100 comprises a rectangular housing with a top end
comprising an entry port or opening 111 therethrough. The interior
volume of the housing preferably comprises two cylindrical brushes
mounted at the same height along the long axis of the housing,
wherein the axes of the cylindrical brushes are mounted between and
perpendicular to the housing front and rear surfaces. In use, the
user inserts the instrument to be cleaned through the opening 111
and between the two cylindrical brushes. This geometrical
configuration permits the user to leave the instrument of other
device in the cleaning device while continuing with other tasks. A
flap 112 may further be provided to cover the opening 111.
[0126] Referring now to FIGS. 11-14, in one embodiment the cleaning
apparatus 100 may further comprise a plurality of fluid injection
ports and system of distributing at least one fluid from a fluid
cartridge to the plurality of fluid injection ports. The system
preferably comprises at least one pump 152 and tubing 154
interconnecting a fluid cartridge 150 to one or more nozzles 168,
as shown in FIG. 13. The fluid may be a saline solution or may be
sterile water or other suitable liquid for cleaning and lubricating
a series of brushes 114. The nozzles are preferably positioned at
the top of the housing and within the cleaning chamber, such that
the fluid is injected into the cleaning apparatus 100 and by
gravitational and rotational forces (applied by the brushes
rotating in close proximity to the nozzles) passes towards the
front or lower portion of the cleaning apparatus 100 and ultimately
in contact with an instrument or device in the cleaning apparatus
100 and the brushes 114. In this manner, the liquid serves to both
cleanse and purge debris and material from the instrument but also
serves to lubricate and cleanse the brushes 114. The system may
also comprise a sensor 164 which provides a signal to the pump 152
when the sensor detects that the brushes or the interior of the
cleaning apparatus does not have adequate moisture. Various sensors
known to those of ordinary skill in the art for achieving this
sensing capability are considered within the scope of the present
disclosure. The system also includes cylinders 122 associated with
the brushes, which have been removed in FIG. 11.
[0127] Referring now to FIGS. 15-20, one embodiment of the present
disclosure relates to a cleaning apparatus 200 comprising a housing
that defines an internal volume, which holds a liquid, and wherein
a mixing device 210 agitates the liquid. In some embodiments of the
present invention, the housing 230 may comprise a top surface, a
bottom surface, and at least one sidewall. In still further
embodiments of the present invention, the housing 230 may comprise
a cylindrical shape, wherein the top surface is substantially
circular, the bottom surface is substantially circular, and wherein
the top and bottom surfaces are connected by a vertical sidewall
extending between the top and bottom surfaces.
[0128] In some embodiments of the present invention, the top
surface may comprise an entry port 234 comprising an opening that
passes through the top surface, to provide access to the internal
volume of the housing 230. The entry port 234 may be an opening of
a specific geometric shape, for example, but not limited to, a
circular, oval, square, rectangular, or any other suitable shape
sized to allow insertion of the device being cleaned into the
cleaning portion of the device. In further embodiments of the
present invention, the entry port 234 may comprise a cover over the
opening. In some embodiments of the present invention, the entry
port may comprise a cover constructed from a flexible, pliable,
conformable, or bendable material with a hole or slot passing
through the cover, to allow the instrument to be inserted
therethrough. The cover may be sized to substantially cover the
entire open surface area of the entry port 234 opening.
[0129] In some embodiments of the present invention, the entry port
234 may be an opening placed in the center of a circular top
surface that is built into or attached to the top end of a
cylindrical housing 230. In some further embodiments of the present
invention, the entry port 234 may comprise a circular funnel-shaped
structure in which the lower internal portion of the funnel-shaped
structure terminates with a circular, oval, square, or rectangular
opening. In still further embodiments of the present invention, the
entry port 234 may comprise a funnel-shaped structure and a
flexible cover with a hole therethrough, wherein the cover is
positioned at the top, wide portion of the funnel.
[0130] In some embodiments of the present invention, the cleaning
apparatus 200 retains a liquid inside at least a portion of the
internal volume of the housing 230. In some of the embodiments of
the present invention, a liquid is utilized to provide both
mechanical cleaning and chemical cleaning to the instrument that is
inserted into the liquid. In some embodiments of the present
invention, a liquid may comprise at least one of water, an alcohol,
an organic, a saline solution, an antiseptic, a preservative,
formaldehyde, a stabilizer, an acid, a base, a solvent, and any
other liquid for achieving a particular function of interest. In
some further embodiments a liquid will fill all of or less than the
internal empty volume of the cleaning apparatus 200. It should be
clear to one of ordinary skill in the art, that embodiments of the
present invention incorporating a liquid cleaning agent may
preferably incorporate o-rings, gaskets, or seals into the
connections between the various elements of the cleaning apparatus
200.
[0131] In some embodiments of the present invention, a mixing
device 210 may comprise at least one of a jet, a nozzle, an
agitator, an impeller, a turbine, a wheel, and any other suitable
device for agitating or mixing the liquid contained in the cleaning
apparatus 200. In some embodiments of the present invention, a
mixing device 210 comprises a rotating device comprising at least
one of an agitator, an impeller, a turbine, a wheel, and any other
suitable rotating mixing device. In some embodiments of the present
invention, a rotating device may utilized, comprising a shaft with
a long axis, a first end, and a second end, with at least one
surface attached to the shaft extending in a directions
substantially perpendicular to the long axis of the shaft, wherein
rotation of the shaft around its long axis rotates the at least one
surface. Thus, when the at least one surface is submerged in the
liquid, the at least one surface provides mechanical work to the
liquid, and motion and mixing of the liquid within the housing
230.
[0132] In some embodiments of the present invention, a mixing
device 210 for providing mixing is at least one of an axial flow
impeller, a radial flow impeller, a Rushton turbine, a propeller, a
paddle mixer, a turbine, a flat blade impeller, a pitched blade
impeller, a curved blade impeller, an anchor impeller, and
combinations thereof. In still further embodiments of the present
invention, a mixing device 210 may comprise a water wheel agitator,
wherein the water wheel comprises a circular outside member, with
at least two spokes extending within the plane of the circular
outside member, and the spokes extend from the outside
circumference of the circular outside member, wherein the two
spokes meet at a hub positioned at the center-point of the circular
member, wherein the hub is also in the plane of the spokes. The
water wheel agitator further comprises at least one
rectangular-shaped mixing surface, connected to the outside
circumference of the circular outside member, and extending upwards
and perpendicular to the plane of the outside circular member.
[0133] In still further embodiments of the present invention, a
water wheel agitator may comprise a bottom circular outside member
and a top circular member, wherein the bottom circular outside
member further comprises at least two spokes extending within the
plane of the bottom circular outside member, and the spokes extend
from the outside circumference of the bottom circular outside
member, wherein the two spokes meet at a hub positioned at the
center-point of the bottom circular outside member, wherein the hub
is also in the plane of the bottom circular outside member. The
water wheel agitator further comprises at least one
rectangular-shaped mixing surface comprising a first end and a
second end, wherein the first end of each mixing surface is
connected to the outside circumference of the bottom circular
outside member, and each mixing surface extends upwards and
perpendicular to the plane of the outside circular member, and the
second end of each mixing surface attaches to an outer
circumference of the top circular outside member.
[0134] In some embodiments of the present invention, a water wheel
agitator further comprises a shaft mounted perpendicularly to a hub
232, which may further comprise a coupling 248 and motor 246 for
providing the mechanical drive necessary to set the mixing device
210 in motion, as illustrated in FIG. 18. In an alternative
embodiment, illustrated in FIGS. 19-20, the apparatus 200 includes
a mixing device 210 interconnected by coupling 254 to a motor 252
that is pneumatically driven. The motor 252 is supplied with a gas
from gas supply 250. In some embodiments of the present invention,
a mixing device 210 for providing mixing to the liquid retained
inside the housing of the cleaning apparatus 200 may be attached to
the housing by affixing the shaft of the mixing device 210
substantially to the center of the inside face of the bottom
surface. In further embodiments of the present invention, the shaft
may extend through a hole in the bottom surface, wherein o-rings,
seals, or gaskets provide a liquid-tight seal to prevent liquid
from leaking out of the housing internal volume. The shaft thus
inserted through the bottom surface may then physically engage a
motor such that the motor drives rotation of the shaft.
[0135] In still further embodiments of the present invention, the
cleaning apparatus 200 may further comprise a base structure 240
that has substantially the same cross-sectional profile as the
cross-sectional profile of the housing 230, wherein the housing 230
is aligned with, and place on top of, the base structure 240.
Further, the motor and any other electronic and mechanical means
may be placed within the base structure 240. In still further
embodiments, a base structure 240 may comprise a top surface, a
bottom surface, and sidewall extending between the top and bottom
surfaces. The base structure 240 may further comprise a top port
244 for receiving the shaft or other coupling to mixing device 210.
The base structure 240 may also comprise an aperture 242 for
receiving an electrical or pneumatic power supply.
[0136] In still further embodiments of the present invention, the
at least one mixing device 210 may comprise one, two, three, four,
or five rotating devices, wherein each rotating device comprises a
shaft that is affixed to the bottom surface of the housing, and
wherein each shaft is rotated by a motor.
[0137] In some embodiments of the present invention, the mixing
device 210 for cleaning the instrument may comprise at least one
cylindrical brush, comprising a first end, a second end, and a
length spanning the first and second ends, wherein the second end
comprises a shaft that is affixed to the bottom surface of the
housing and is driven by a motor. In such embodiments, the at least
one brush may provide liquid mixing as well as brush surfaces for
providing additional mechanical means of cleaning.
[0138] In still further embodiments of the present invention, the
mixing device 210 may comprise at least one jet or nozzle. It will
be understood by one of ordinary skill in the art, that embodiments
utilizing at least one jet or nozzle will require a pressurized
source of water. This may be provided by a "house" water supply;
e.g. city water, or if higher pressures are required, by a pump
provided by the cleaning apparatus. The disadvantage of using
"house" water is that every volumetric unit of water added to the
cleaning apparatus 200 will also need to be removed, whereas an
internally located pump, provides the advantage of being able to
reuse the internal volume of liquid of the apparatus itself. An
internal pump also enables many more liquids to be used, besides
water. In addition, the internal flow path of a pump, e.g. an inlet
and an outlet, may provide a convenient means for providing a
filter mechanism for removing the debris from the liquid, as it is
removed from the instrument being cleaned.
[0139] In some embodiments of the present invention, the housing of
a cleaning apparatus 200 may further comprise a filter device 220,
wherein the filter device 220 resides within the mixing device 210.
In this embodiment, a pump (not shown) may discharges water through
the pump's outlet. The outlet then leads to a nozzle or jet located
within the cleaning apparatus housing, such that the water is
re-injected into the housing through the nozzle and/or jet. In some
embodiments of the present invention, the pump is a centrifugal
pump or a positive displacement pump.
[0140] In some embodiments of the present invention, the housing of
the cleaning apparatus maintains a housing volume that is less than
10% full of liquid and spray nozzles are used to clean the
instrument. As above for the jet or nozzle embodiments, spray
nozzles will also require a pressurized source of water.
[0141] In still further embodiments of the present invention, an
ultrasound source may be provided to embodiments of the present
invention wherein the housing is substantially full of liquid.
[0142] Referring now to FIG. 21, the cleaning apparatus further
comprises a selectable attachment 300 for coupling the cleaning
apparatus to an operating room table or other piece of furniture or
stationary equipment in the operating room. According to this
embodiment, the selectable attachment may be comprised of an arm
with a first end coupled to the cleaning apparatus and positionable
about a wide variety of axes and orientations, such as may be
accomplished by a swivel or ball and socket connection between the
arm and the cleaning apparatus. The arm according to this
embodiment may further comprise a second end, which includes a
coupling device capable of coupling the second end of the arm to a
operating room table or other piece of furniture. In one
embodiment, this coupling device is comprised of a clamp. In
another embodiment, the coupling device is magnetic. In yet another
embodiment, the coupling device is a vice. Several variations and
combinations of coupling mechanisms known to those of skill in the
art may be substituted for these preferred coupling devices without
deviating from the novelty of the present disclosure, and are
accordingly considered to be within the scope of the disclosure and
the appended claims.
[0143] In some embodiments of the present invention, the cleaning
apparatus may be attached to a securement device which enables the
user to place the cleaning apparatus in a specific desire position
or configuration relative to the work environment. In some
embodiments of the present invention a securement device may
comprise a flexible and/or moveable arm, wherein a first end of the
arm is attached to a stationary object, e.g. a table, desk,
counter, and a second end of the arm is attached to the cleaning
apparatus.
[0144] In some embodiments of the present invention, the length of
a moveable arm may be divided into a first length and a second
length, which connect the stationary object to the cleaning
apparatus. The distal end of the first length may terminate in a
joint, which may attach to the proximal end of the second length.
The proximal end of the first length may be pivotally coupled to a
joint, which attaches to the stationary object for pivotal movement
relative thereto.
[0145] The first length may rotate a full 360 degrees around a
vertical axis extending through the cleaning apparatus. In addition
the joint located at the stationary object may also rotate upward
out of the horizontal plane, up to 180 degrees. It should, however,
be understood that the first length's degrees of rotational
movement can have other values without departing from the scope of
the present invention. The proximal end of the second length may
attach to the distal end of the first length at a second joint.
This second joint may comprise any articulating means known to one
of ordinary skill in the art to allow the second length to rotate
around the joint to any desirable position within three-dimensional
space. For example, the second length may rotate a full 360 degrees
in a plane around the second joint at the distal end of the first
length. The second length may also rotate relative to the first
length in a vertical plane.
[0146] It should, however, be understood that the second length
horizontal and vertical rotation ranges and the first length
horizontal and vertical rotation ranges, as well as their general
movement within three-dimensional space, can be varied to suit the
particular design and functional requirements of the user of the
cleaning apparatus. Similarly, the specific lengths of the first
and second lengths may have any desired specific values, as
required by a user or environment.
[0147] Other embodiments of the present invention may entail
securement devices comprising a single stationary arm, wherein one
end of the arm is affixed to a point of rotation.
[0148] According to yet another embodiment, the selectable
attachment may be comprised of a mechanism for attaching the
cleaning apparatus to one or more surgical drapes. In one
embodiment, this may be accomplished by a suitable combination of
fabric, such as Velcro.
[0149] According to other embodiments, the attachment may be
accomplished via a plurality of oppositely charged magnets, which
are separable and may be placed on opposite sides of the one or
more drapes to secure the cleaning apparatus.
[0150] Regardless of the embodiment for attaching the cleaning
apparatus to a table or other piece of furniture, the attachment is
preferred to further comprise means for selectively establishing
the height and/or orientation of the cleaning apparatus relative to
the physician or other user of the cleaning apparatus. For example,
the means may comprise one or more adjustable elements, such as a
height position adjustment for securing the cleaning apparatus in a
location ideal for the location the surgeon is standing, the
surgeon height, right-handed versus left-handed dominance,
preferred location relative to other equipment and the operating
environment, etc. As another example, the adjustment may comprise
the ability to permit the cleaning apparatus to rotate away from
the operating site if no longer in use or temporarily unnecessary.
The means described herein may be comprised of a telescoping
mechanism, a C-arm mechanism, a simple-hinged mechanism, a pivot
mechanism, a ball and socket mechanism, a living hinge mechanism, a
set-screw mechanism, or a geared mechanism, among other types of
adjustable mechanisms.
[0151] In another embodiment, the selectable attachment may further
comprise the ability to rotate the orientation of the cleaning
apparatus according to user preference, such that the receiving
face of the cleaning apparatus is oriented facing up or facing to
one lateral side or another lateral side. In this manner, the
cleaning apparatus may be oriented to permit a surgeon to insert an
instrument into the cleaning apparatus either in an upwardly facing
receiving area or a laterally facing receiving area (i.e., parallel
to the plane of the surgical field).
[0152] Another aspect of the present disclosure relates to
maintaining the sterility of the surgical environment, and
shielding the cleaning apparatus from the sterile field. For
example, the cleaning apparatus may further comprise a shield or
barrier to prevent material from leaving the instrument or other
device to be cleaned by the cleaning apparatus in a direction other
than internal to the cleaning apparatus and the collection tray. In
this manner, for any instruments that are used and needing to be
cleaned in the operating room, the surgeon or other medical
professional may conveniently clean the instrument without
accidentally removing fluid or debris from the instrument on the
drape, the patient, the sterile zone, or otherwise exposing this
non-sterile material onto other instruments or to the surgical site
generally.
[0153] In one embodiment, the collection tray permits the
collection of dry materials. In another embodiment, the collection
is facilitated by a saline bath, which permits the material
collected to be cleaned prior to collection. In a preferred
embodiment, the collection tray resides near the bottom of the
cleaning apparatus, so that material and debris collected during
the cleaning operation passes through the brushes and into the
collection tray by virtue of gravitational forces. The cleaning
apparatus may comprise one or more filters, of varying granularity,
to facilitate the separation of bone material, for example, from
other material and fluid collected during the cleaning process. The
filters may be removable for periodic cleaning and for removing the
material from the filters.
[0154] The apparatus may comprise a particular entry portal for
facilitating the placement of the instrument or other device to be
cleaned by the apparatus. According to one particular embodiment,
the instrument entry portal is oriented to grab and stabilize the
instruments, which are often long and unbalanced, and permits the
surgeon to leave the instrument in the cleaning apparatus for
continued cleaning or to free his hands temporarily while he uses
another instrument. A preferred embodiment having a duck bill entry
portal is shown in FIG. 1, however, several alternately oriented
entry portals may be provided without departing from the spirit of
the present disclosure.
[0155] The apparatus disclosed herein may be made of a variety of
different materials. These materials may include, by way of example
but not limitation, stainless steel, titanium alloy, aluminum
alloy, chromium alloy, and other metals or metal alloys. These
materials may also include, for example, PEEK, carbon fiber, ABS
plastic, polyurethane, resins, particularly fiber-encased resinous
materials rubber, latex, synthetic rubber, synthetic materials,
polymers, and natural materials.
[0156] While various embodiment of the present disclosure have been
described in detail, it is apparent that modifications and
alterations of those embodiments will occur to those skilled in the
art. However, it is to be expressly understood that such
modifications and alterations are within the scope and spirit of
the present disclosure, as set forth in the following claims. For
further illustration, the information and materials in appended
Exhibit A hereto are expressly made a part of this disclosure and
incorporated by reference herein in their entirety. The foregoing
discussion of the disclosure has been presented for purposes of
illustration and description. The foregoing is not intended to
limit the disclosure to the form or forms disclosed herein. In the
foregoing Detailed Description for example, various features of the
disclosure are grouped together in one or more embodiments for the
purpose of streamlining the disclosure. This method of disclosure
is not to be interpreted as reflecting an intention that the
claimed disclosure requires more features than are expressly
recited in each claim. Rather, as the following claims reflect,
inventive aspects lie in less than all features of a single
foregoing disclosed embodiment. Thus, the following claims are
hereby incorporated into this Detailed Description, with each claim
standing on its own as a separate preferred embodiment of the
disclosure.
[0157] Moreover, though the present disclosure has included
description of one or more embodiments and certain variations and
modifications, other variations and modifications are within the
scope of the disclosure, e.g., as may be within the skill and
knowledge of those in the art, after understanding the present
disclosure. It is intended to obtain rights which include
alternative embodiments to the extent permitted, including
alternate, interchangeable and/or equivalent structures, functions,
ranges or steps to those claimed, whether or not such alternate,
interchangeable and/or equivalent structures, functions, ranges or
steps are disclosed herein, and without intending to publicly
dedicate any patentable subject matter.
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